Re: how to use variable with translit definitions

[Andreas Schwab]

Vincent Torri <address@hidden> writes:

> Hey,
>
> I've written an m4 macro which is basically:
>
>
> AC_DEFUN([AC_CHECK_ECORE_MODULE],
> [
> pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
>
> ecore_]DOWN[_libs=""
>
> AC_SUBST(ecore_]DOWN[_libs)
>
> popdef([DOWN])
> ])

After AC_DEFUN has been executed the body of AC_CHECK_ECORE_MODULE
basically looks like this:

pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl

ecore_DOWN_libs=""

AC_SUBST(ecore_DOWN_libs)

popdef([DOWN])

Note that the outer level of quoting has been stripped at the time the
AC_DEFUN macro was expanded.

> But it seems that I do not use correctly the DOWN variable (ecore_***_libs
> is not subsituted). I have tried with DOWN instead of ]DOWN[ without
> success.
>
> Does someone know the correct syntax to do what I want ?

What you want is that the body of the macro looks like this:

pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl

ecore_[]DOWN[]_libs=""

AC_SUBST(ecore_[]DOWN[]_libs)

popdef([DOWN])

Now put a pair of quotes around it, and you get this:

AC_DEFUN([AC_CHECK_ECORE_MODULE],
[
pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl

ecore_[]DOWN[]_libs=""

AC_SUBST(ecore_[]DOWN[]_libs)

popdef([DOWN])
])

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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